# Marine battery Exide EM1000 12V 50Ah 800A AGM ![Marine battery Exide EM1000 12V 50Ah 800A AGM](https://baterias.com/5659-home_default/battery-exide-em1000-12v-50ah-800a.jpg) > Exide EM1000 marine battery 12V 50Ah 800A AGM. MARINA START AGM range. Dimensions 260×173×206 mm, + terminal on the left. Demanding marine cranking. **Category:** [Boat Batteries](https://baterias.com/gb/boat-batteries) → [EXIDE](https://baterias.com/gb/exide) - **Canonical URL**: https://baterias.com/gb/battery-exide-em1000-12v-50ah-800a - **Language**: en-GB - **Brand**: EXIDE - **Reference**: BCOM-EXIDE-EM1000 - **EAN**: 3661024036023 - **MPN**: EM1000 - **Price**: 255,70 € - **Stock**: In stock ## Technical specifications | Feature | Value | |---|---| | Brand | EXIDE | | Reference | EM1000 | | Model | EXIDE MARINA START AGM | | Voltage (V) | 12 V | | Largo | 260 cm | | Ancho | 173 cm | | Alto | 206 cm | | Peso | 17.9 kg | | Tecnología | AGM | | EAN | 3661024036023 | | Terminal layout | 1+9 | | Terminal type | SAE M 3/8"- 5/16"&stud | | Hold down | B7 | | Cold cranking amps (EN) | 800 A | | Capacity (C20) | 50 Ah (c20) | ## Quick description **Exide EM1000 12V 50Ah 800A** is a starting battery for boats and motorhomes, with a case reinforced against the vibration of mooring and cruising. All its energy is designed to crank the engine reliably, not to run long loads: for that, fit a separate service bank. ### Why this marine starting battery? - **Marine design** built for boat swell and vibration - **Starting in demanding conditions** maximum cranking power - **Sealed and safe** maintenance-free even when the boat rolls 🔌 Voltage 12 V ⚡ Capacity 50 Ah C20 🔋 Cold cranking 800 A EN-1 📏 Dimensions 260×173×206 mm ⚙️ Technology AGM 🧭 Polarity Positive on the left ⚖️ Weight 17,9 kg 🏷️ Model EXIDE MARINA START AGM ## Description ## Marine battery Exide EM1000 Marina Start AGM 50Ah 800A 12V 12*V* Voltage 50*Ah* Capacity 800*A* Cold cranking 17.90*kg* Weight With **50 Ah** at **12 V** and **800 A** of cold cranking current (EN), the **Exide EM1000** from the **Marina Start AGM** range is built for motor and sailing boats, both for engine starting and onboard services. It measures 260 × 173 × 206 mm, the format sought by anyone replacing a 50 Ah battery in boats. - Reinforced case against vibration and swell. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Tolerates the daily cycling of a boat in season. - Powers onboard services: lights, sounder, GPS, fridge. ### What the Exide EM1000 is for With 50 Ah, the Exide EM1000 covers motor and sailing boats, both for engine starting and onboard services. At the end of the season, charge it fully before winter storage. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 17.90 kg, SAE M 3/8"- 5/16"&stud terminals and B7 hold-down. ### The Exide EM1000: Marina Start AGM range and AGM technology The **Marina Start AGM** is the Exide range the EM1000 belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle. AGM (Absorbent Glass Mat) technology seals the electrolyte in glass microfibre. The result is a maintenance-free battery that is highly vibration-resistant and able to withstand deep discharges that would ruin a classic lead-acid battery. ### Size, terminals and hold-down of the Exide EM1000 The Exide EM1000 is made in the 260 × 173 × 206 mm format and weighs 17.90 kg. It uses a B7 hold-down and SAE M 3/8"- 5/16"&stud terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters. ### Exide: the maker behind the EM1000 With more than a century of history, Exide Technologies manufactures automotive, marine, motorcycle and industrial batteries in Europe. Its presence as original equipment on assembly lines vouches for the quality of every reference. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### Care and maintenance As a service battery, avoid routine discharges below 50% to extend its cycle life. At the end of the season, charge the battery fully and, if possible, keep it on a charger over the winter lay-up. ### Warranty and coverage The Exide EM1000 comes with the **manufacturer's official warranty** against manufacturing defects. Deep discharge from winter lay-up without charging is not covered. ### Delivery times and returns Order **before [[ks:cutoff]]** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email. ## Frequently asked questions ### Is the Exide EM1000 an AGM battery and what are the benefits of AGM? Yes. The EM1000 from Exide uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for boats with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions. ### How do I fit the EM1000 model in my boat? In most boats it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on this page. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On boats with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### How long does the Exide EM1000 battery last? Expected lifespan of the Exide EM1000 is 5 to 8 years in mild-climate boat use with Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured. ### What are the measurements of the EM1000 model? Dimensions (length × width × height) are 260×173×206 mm — also written as 260x173x206 mm — following the European DIN standard. Always measure the space in your boat before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ### Is the EM1000 valid for my vehicle? Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The EM1000 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Exide EM1000? Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop boats. See the "Equivalents" section to view recommended options at the same performance level. ## Equivalent batteries - [EXIDE EP450](https://baterias.com/gb/battery-exide-ep450-12v-50ah-750a) ## Reviews - **Average rating**: 4.8 / 5 (31 reviews) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-09-28*